apply v2.2.22 changes

mod/nginx/bbb/notes.nginx

@@ -8,6 +8,9 @@ location /pad/p/ {
     proxy_set_header       Host $host;
     proxy_buffering off;
 
+    proxy_set_header X-Forwarded-Proto https; # for EP to set secure cookie flag when https is used
+    proxy_http_version 1.1;
+
     # there is currently no viable source for building the
     # bbb-etherpad including sesstiontokens which got introduced in v2.2.21
     # https://github.com/bigbluebutton/bigbluebutton/issues/10159